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using System;
using System.Collections;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using Tango.Core.Commands;
using System.ComponentModel;
namespace Tango.SharedUI.Controls
{
public class MultiSelectComboBox : Control
{
static MultiSelectComboBox()
{
DefaultStyleKeyProperty.OverrideMetadata(typeof(MultiSelectComboBox), new FrameworkPropertyMetadata(typeof(MultiSelectComboBox)));
}
public MultiSelectComboBox() : base()
{
RemoveAllCommand = new RelayCommand((() => SelectedItemsList.Clear()), () => SelectedItemsList != null && SelectedItemsList.Count > 0);
RemoveItemCommand = new RelayCommand<string>((item) => SelectedItemsList.Remove(item), () => SelectedItemsList != null);
AddItemCommand = new RelayCommand<string>((item) => SelectedItemsList.Add(item));
SearchText = "";
}
#region Properties
public ObservableCollection<string> SelectedItemsList
{
get { return (ObservableCollection<string>)GetValue(SelectedItemsListProperty); }
set { SetValue(SelectedItemsListProperty, value); }
}
public static readonly DependencyProperty SelectedItemsListProperty =
DependencyProperty.Register("SelectedItemsList", typeof(ObservableCollection<string>), typeof(MultiSelectComboBox), new PropertyMetadata(default(ObservableCollection<string>)));
public ListCollectionView SearchItemsList
{
get { return (ListCollectionView)GetValue(SearchItemsListProperty); }
set { SetValue(SearchItemsListProperty, value); }
}
/// <summary>
/// The search items list property for popup items list
/// </summary>
public static readonly DependencyProperty SearchItemsListProperty =
DependencyProperty.Register("SearchItemsList", typeof(ListCollectionView), typeof(MultiSelectComboBox), new PropertyMetadata(default(ObservableCollection<string>)));
public ObservableCollection<string> Items
{
get { return (ObservableCollection<string>)GetValue(ItemsProperty); }
set { SetValue(ItemsProperty, value); }
}
public static readonly DependencyProperty ItemsProperty =
DependencyProperty.Register("Items", typeof(ObservableCollection<string>), typeof(MultiSelectComboBox), new PropertyMetadata(default(ObservableCollection<string>)));
public bool IsToggleChecked
{
get { return (bool)GetValue(IsToggleCheckedProperty); }
set { SetValue(IsToggleCheckedProperty, value); }
}
public static readonly DependencyProperty IsToggleCheckedProperty =
DependencyProperty.Register("IsToggleChecked", typeof(bool), typeof(MultiSelectComboBox), new PropertyMetadata(false));
private string _searchText;
/// <summary>
/// Gets or sets the search text of TextBox.
/// </summary>
public string SearchText
{
get { return _searchText; }
set {_searchText = value;
RaisePropertyChanged("SearchText");
OnTextChanged();
}
}
void OnTextChanged()
{
if(SearchItemsList != null)
{
if (String.IsNullOrEmpty(SearchText))
SearchItemsList.Filter = null;
else
SearchItemsList.Filter = new Predicate<object>(o => ((string)o == SearchText));
}
}
/// <summary>
/// Occurs when a property has changed.
/// </summary>
public event PropertyChangedEventHandler PropertyChanged;
/// <summary>
/// Raises the property changed event.
/// </summary>
/// <param name="propName">Name of the property.</param>
protected virtual void RaisePropertyChanged(String propName)
{
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propName));
}
#endregion
/// <summary>
/// When overridden in a derived class, is invoked whenever application code or internal processes call <see cref="M:System.Windows.FrameworkElement.ApplyTemplate" />.
/// </summary>
public override void OnApplyTemplate()
{
base.OnApplyTemplate();
if (SelectedItemsList == null)
SelectedItemsList = new ObservableCollection<string>();
SearchItemsList = new ListCollectionView(this.Items);
//ItemsControl iControl = FindName("asd") as ItemsControl;
//iControl.ItemContainerGenerator.ItemsChanged += ItemContainerGenerator_ItemsChanged;
//iControl.ItemContainerGenerator.ContainerFromItem(null);
//for (int i = 0; i < iControl.Items.Count; i++)
//{
// FrameworkElement a = iControl.ItemContainerGenerator.ContainerFromIndex(i) as FrameworkElement;
//}
}
private void ItemContainerGenerator_ItemsChanged(object sender, System.Windows.Controls.Primitives.ItemsChangedEventArgs e)
{
}
#region Commands
/// <summary>
/// The remove all command property for clear SelectedItemsList
/// </summary>
public static DependencyProperty RemoveAllCommandProperty = DependencyProperty.Register("RemoveAllCommand", typeof(ICommand), typeof(MultiSelectComboBox));
public ICommand RemoveAllCommand
{
get { return (ICommand)GetValue(RemoveAllCommandProperty); }
private set { SetValue(RemoveAllCommandProperty, value); }
}
/// <summary>
/// The remove item from SelectedItemsList command property
/// </summary>
public static DependencyProperty RemoveItemCommandProperty = DependencyProperty.Register("RemoveItemCommand", typeof(RelayCommand<string>), typeof(MultiSelectComboBox));
public RelayCommand<string> RemoveItemCommand
{
get { return (RelayCommand<string>)GetValue(RemoveItemCommandProperty); }
private set { SetValue(RemoveItemCommandProperty, value); }
}
public static DependencyProperty AddItemCommandProperty = DependencyProperty.Register("AddItemCommand", typeof(RelayCommand<string>), typeof(MultiSelectComboBox));
public RelayCommand<string> AddItemCommand
{
get { return (RelayCommand<string>)GetValue(AddItemCommandProperty); }
private set { SetValue(AddItemCommandProperty, value); }
}
#endregion
}
}
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